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Netzwerk Teilchenwelt / IPPOG International Masterclasses Bonn, Michael KobelFolie HIGH SCHOOL STUDENTS AND TEACHERS  National and international effort, both lead in Germany by TU Dresden Bring real astro-/particle physics data analysis to high schools Organize in-service teacher training International program 2014: 40 Countries and 199 participating institutes National German program: largely extended scope and sustainable output